Ovariole structure and oogenesis in queens and workers of the stingless bee<i>Melipona quadrifasciata</i>(Hymenoptera: Apidae, Meliponini) kept under different social conditions

Tanaka, Erica D.; Santana, Weyder Cristiano; Hartfelder, Klaus

doi:10.1051/apido/2008071

Cited by 12 publications

(13 citation statements)

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“…The ovarian cycle and general morphology of the ovarioles of non-exposed bees were typical of polytrophic meroistic ovaries, as described for other bee species (Martins and Serrão, 2004;Tanaka and Hartfelder, 2004;Tanaka et al, 2009;Chapman, 2012), i.e., each ovariole was comprised of a terminal filament, germarium and vitellarium (Fig. 1A, Fig.…”

Section: Morphology Of the Worker Ovary Of The Control Groupsupporting

confidence: 53%

“…1A-E). Although not shown in the present work, follicular abortion and the corpus luteum were also observed, which is a normal condition in the ovarian development of this and other species of bees; this morphology is found mainly in queens but can also be observed in egg-laying workers Patrício and Cruz-Landim, 2008;Tanaka et al, 2009).…”

Section: Morphology Of the Worker Ovary Of The Control Groupcontrasting

confidence: 51%

“…This ovarian phase does not depend on any exogenous stimuli and other than the fact that the fat body may supply the primary oocyte with some compounds for initial development, its participation in ovarian development begins in the vitellogenic phase, which depends on exogenous stimuli, such as mating (Tanaka and Hartfelder, 2004;. The death of nurse cells culminates in the full development of an oocyte (Reginato and Cruz-Landim, 2003;Tanaka et al, 2009), but what was observed in the ovaries of cadmium-exposed bees is the death of or damage to entire follicles (Fig. 2F), with chromatin condensation of the nurse cells in the initial (Fig.…”

Section: Morphology Of the Worker Ovary When Exposed To Cadmiummentioning

confidence: 99%

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Effect of Cadmium on Worker Ovary Morphology of Bombus morio (Hymenoptera: Bombini)

Abdalla

Pedrosa

Domingues

et al. 2018

American Journal of Agricultural and Biological Sciences

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Bees are valuable bioindicators, providing information regarding environmental conditions through different kinds of analyses. Therefore, the effect of cadmium on the morphology of ovaries of Bombus morio workers was used to study a concentration considered environmentally safe (1 ppb) in Brazil. Workers of the same estimated age exposed for 48 h to 1 ppb cadmium showed extensive morphological changes in the germarium and vitellarium compared with the control group. Bees exposed to cadmium showed death of or damage to entire vitellogenic follicles, with chromatin condensation and fragmentation of nurse cell nuclei. In the germarium, the intercellular bridge connecting the primary oocyte to the developing nurse cells was broken. The nurse cells formed a cluster of cells with compacted chromatin, detached from an isolated primary oocyte. In some cases, the cytoblasts were absent from the germarium, leaving an empty space surrounded by collapsed peritoneal sheaths. We further propose that such a hazardous impact of 1 ppb cadmium on the ovaries of B. morio workers is not only mainly due to cadmium itself as an endocrine disruptor, indirect oxidative stress promoter, cytoskeleton destabilizer and mutagenic trace metal, but by disruption of the trophocytes, where perivitelline space filled with eosinophil material in the control group, was totally empty in exposed bees, suggesting interruption of trophocyte vitellogenin production.

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Section: Morphology Of the Worker Ovary Of The Control Groupsupporting

confidence: 53%

Section: Morphology Of the Worker Ovary Of The Control Groupcontrasting

confidence: 51%

Section: Morphology Of the Worker Ovary When Exposed To Cadmiummentioning

confidence: 99%

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Effect of Cadmium on Worker Ovary Morphology of Bombus morio (Hymenoptera: Bombini)

Abdalla

Pedrosa

Domingues

et al. 2018

American Journal of Agricultural and Biological Sciences

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“…So, in distinction to honey bee workers, where oogenesis is blocked at certain steps during follicle development (Tanaka and Hartfelder 2004;Ronai et al 2015), the ovary of a stingless bee worker goes through the same cycle of activity as that of a queen (Tanaka et al 2009), the only difference being the number of serial follicles in the ovarioles and the fact that the ovaries of workers undergo cellular degradation as these grow older and become foragers.…”

Section: Ovarian Activity In Adult Honey Beesmentioning

confidence: 99%

The ovary and its genes—developmental processes underlying the establishment and function of a highly divergent reproductive system in the female castes of the honey bee, Apis mellifera

et al. 2017

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The strong dimorphism in ovary phenotype seen between honey bee queens and workers represents the anatomical fixation of reproductive division of labor. We review the developmental processes by which the divergent ovary phenotypes become established, mainly focusing on the massive programmed cell death (PCD) that destroys most of the ovariole primordia in the worker ovary during larval development. Ovary-specific transcriptome analyses revealed a set of differentially expressed genes associated with PCD, including two long noncoding RNAs. PCD also plays a major role regulating ovarian activity in adult honey bee workers, and a major effect candidate gene mediating this process is Anarchy , previously identified through classical genetics in a rebel worker strain. Finally, we ask how the strong ovary phenotype dimorphism in the genus Apis may have evolved, and we discuss this by contrasting honey bees with the equally eusocial stingless bees. Through a comparison of their mating systems (polyandry versus monandry), as well as comparative data on female and male gonad structure across several families of bees, we propose the hypothesis that the exceptional gonad structure in Apis queens and drones evolved via shared developmental pathways. Furthermore, we suggest that selection on massive sperm production in Apis drones may have been a driving force leading to this exaggerated gonad morphology. honeybee / gonad development / cell death / differential gene expression / meliponids Where does the spirit of the hive reside? At least to some extent it is in the ovaries of a crowd of bees working in a dark hive (Robert E.

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“…In Cremastogaster (Formicidae), each ovary is reduced to one ovariole [ 56 ]. In Apis mellifera ovarioles vary from 1 to 30 [ 57 – 58 ].…”

Section: Discussionmentioning

confidence: 99%

Convergent Reduction of Ovariole Number Associated with Subterranean Life in Beetles

Faille

Pluot-Sigwalt

2015

PLoS ONE

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BackgroundSome species of obligate cavernicolous beetles are known to possess a unique feature—a contraction of the larval cycle. In contrast to many other subterranean beetles, life-cycle contraction in Trechini ground beetles (Carabidae) is correlated with a reduction in the number of eggs and a drastic reduction in the number of ovarioles. This remarkable peculiarity has only been reported for a small number of closely related species.ResultsWe give a description of the female internal reproductive system for six species of Trechini, including five subterranean species, with a particular focus on the western Pyrenean radiation of Aphaenops, a group for which nothing is known regarding the early life stages. We redescribe the internal female genitalia of A. crypticola Linder. Study of the ovarioles allowed us to infer the postembryonic development of the larvae for each species examined. We then used a phylogenetic framework to recognize two independent reductions in the number of ovarioles in the Pyrenean lineage. We discuss the multiple convergent evolutions in ovariole number and the potential link between a reduction of ovariole number and troglobiomorphism in a phylogenetic context.ConclusionsThere is an extreme reduction in ovariole number and size within the species studied; the eggs produced by small ovarioles have a remarkably large size. A reduction to one ovariole has occurred independently at least twice in this subterranean group. A reduction in the number of ovarioles in ground beetles is one of the striking consequences of subterranean specialization and it is correlated with another remarkable adaptation of subterranean beetles, a reduction in the number of larval instars.

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Ovariole structure and oogenesis in queens and workers of the stingless beeMelipona quadrifasciata(Hymenoptera: Apidae, Meliponini) kept under different social conditions

Cited by 12 publications

References 46 publications

Effect of Cadmium on Worker Ovary Morphology of Bombus morio (Hymenoptera: Bombini)

Effect of Cadmium on Worker Ovary Morphology of Bombus morio (Hymenoptera: Bombini)

The ovary and its genes—developmental processes underlying the establishment and function of a highly divergent reproductive system in the female castes of the honey bee, Apis mellifera

Convergent Reduction of Ovariole Number Associated with Subterranean Life in Beetles

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